我使用aplay -L,其中列出了多个设备和它的描述。
$ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
surround40:CARD=PCH,DEV=0
HDA Intel PCH, ALC1220 Analog
4.0 Surround output to Front and Rear speakers
hw:CARD=PCH,DEV=0
HDA Intel PCH, ALC1